feat(alerts): add CPU state notifications (#2249)

internal/migrations/1787356800_cpu_state_alerts.go

@@ -0,0 +1,36 @@
+package migrations
+
+import (
+	"slices"
+
+	"github.com/pocketbase/pocketbase/core"
+	m "github.com/pocketbase/pocketbase/migrations"
+)
+
+var cpuStateAlertNames = []string{"CPUIOWait", "CPUSteal"}
+
+func init() {
+	m.Register(func(app core.App) error {
+		collection, err := app.FindCollectionByNameOrId("alerts")
+		if err != nil {
+			return err
+		}
+		field := collection.Fields.GetByName("name").(*core.SelectField)
+		for _, name := range cpuStateAlertNames {
+			if !slices.Contains(field.Values, name) {
+				field.Values = append(field.Values, name)
+			}
+		}
+		return app.Save(collection)
+	}, func(app core.App) error {
+		collection, err := app.FindCollectionByNameOrId("alerts")
+		if err != nil {
+			return err
+		}
+		field := collection.Fields.GetByName("name").(*core.SelectField)
+		field.Values = slices.DeleteFunc(field.Values, func(name string) bool {
+			return slices.Contains(cpuStateAlertNames, name)
+		})
+		return app.Save(collection)
+	})
+}